Illinois State Board of Education (ISBE) records show that 63.6 percent of Johnston City High School's (JCHS) 2015 graduating class enrolled in college within 12 months of graduation.
The 2015 state average for students in public schools was 70 percent.
For JCHS, its college enrollment rate marks a decline since 2014, when 65.1 percent of its graduates chose post-secondary education.
The data, collected by the National Student Clearinghouse, includes two- and four-year colleges.
Enrollment at JCHS in 2015 was 341; 70 (20.53 percent) were seniors.
Also according to ISBE, 29.9 percent of JCHS seniors were "college ready" in 2015, versus an average of 46 percent statewide.
All students who score a 21 on the ACT qualify as "college ready."
Among high schools in Southeast Illinois, the class of 2015 college readiness rates at Carterville High School (61.5 percent), Goreville High School (39.5 percent), Pope County High School (34.1 percent), Hamilton County Junior/Senior High School (32.2 percent), Massac County High School (43.5 percent) and Vienna High School (47.4 percent) were all higher than at JCHS. Meridian High School (13.9 percent), Christopher High (27.5 percent), and Crab Orchard High School (28.9 percent) were all lower.
JCHS students did better on reading (31.3 percent) and English (47.8 percent) and worse on science (22.4 percent) and math (26.9 percent).
Only 11.9 percent of JCHS students were college ready in all four subjects, according to ISBE.